Rand-turning machine.



C.E.KENNEDYI.

lRAND TURNING'MACHI'NE.

APPLICATION FILED NOV. I. 1915.

Patented uly 11, 1916.

UNITED STATES PATENT oEEioE. 'I

CHARLES E. KENNEDY, 0F LAKEVILLE, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, 0F PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

To all whom it may concern Be it known that I, CHARLES E. KENNEDY, acitizen of the United States, residing at Lakeville, in the county ofPlymouth and State of Massachusetts, have invented certain Improvementsin Rand-Turning Machines, of which the following description,l

in connection with the accompanying drawings, is a specification, likereference char-v acters on the drawings indicating like parts in theseveral'figures. v

This invention relates to machines for imparting a predetermined shapeto articles of leather, and more particularly to machines for givingrand strips a form adapted to permit them to be conveniently attached toheels.

As is well known, rands used in the manufacture of boots and shoes arestrips of leather which taperV transversely to a thin edge. It is acommon practice in the art to prepare the rands for the use for whichthey are intended by giving them approximately the contour which istheir final shape whenattached toV heels. This is effected by bendingthe rand` strip in the plane of the strip into a shape approXimatingthat of the heel to which it is to be attached.

While various kinds of machines have Vbeen designed in which the randstrip is bent to the desired lshape and t then compressed so that itwill retain such shape until 4it is about to be attached to a heel, suchmachines have been 'of complicated construction and slow in operationbecause the operator is obliged to start and stop the machine, bytreadl'e'or otherwise, for each rand strip operated upon. On the otherhand, the machines having rotary members for molding rand strips, whilebeing more rapid and less complicated, have given a curved co-ntour tothe entire length of the rand and such a shape doesV not correspond tothe ordinary shape of heel and can be fitted thereto only withconsiderable difliculty and loss of time.

The desired form, which corresponds most closely to the usual shape ofheel, is substantially U-shaped and the primary object of the presentinvention is to provide a simple, rapid and .efficient machine forimparting arcontour of this nature to rand strips by curving only aportion thereof intermediate between .their ends, without laffectingtheend portions, so that the end portions will retain their orlginal form,which may be sub- Y Specification of Letters Patent.

RAND-TURNING MACHINE.

`Patented- July 11, 1916.

Application led November 1, 1915. Serial N o. 59,036.

stantially straight or slightly curved, the latter being the case whentherands are made from the skivings produced in the manufacture ofcertain shapes of heel counters or box toe blanks.

Important features of the present invention consist in providing a randmolding machine with means constructed and -arranged to limit the actionof the rand moldlng means to a portion of a rand strip intermediatebetween its ends, and in providing means to prevent the action-of saidrandmolding means upon the end portions of the rand strip.

Another feature of the invention consists in having the rand moldingmembers moved periodically intoV and outof coperative relation to eachother during the continuous operation of the machine so that, withoutthe use of a treadle or any other starting and stopping mechanism, thecompleted rand may be readily removed from the machine and another randstrip be inserted therein during the time that the, rand molding membersare out of coperative relation to each other. l

An additional feature of the invention consists in having the rand guideand the rand molding members moved periodically into and out ofcoperative relation to each other so that only a portion of the randstrip will be molded.l Such a construction also allows the -rand stripto be more readily inserted into the machine.

' or may be'made to 4bear some other predetermined relation to eachother, as is desirable when used on so-called orthopedic or kldneyheels.

W'hile the embodiment of the invention presently to be describedconsists of a rotary machine having the above features for accomplishingthe desired object, it should be understood that some of the featuresmay be embodied in other forms of machines for the purpose' withoutdeparting fromvthe scope ofthe invention as defined in the annexedclaims.l

' 27 and 28. 40A

A'machine embodying the invention is illustrated in the accompanyingdrawings, in which,-

Figure 1 is a perspective view of the complete machine; F ig. 2 is aside elevation of the machine with portions removed in order thatcertain of the operating parts may be more clearly sho-wn; Fig. 3 is aview similarv to Fig. 2 but with the operating parts in a differentposition; Fig. 4 is a view, partly in section, taken in the verticalplane indicated by the line 4 4 in Fig. 3; Fig. 5 is a detail, partly insection, of the cam and associated parts that control the movement ofthe presser block; and Fig. 6 is a view of the rand produced by themachine.

The machine is provided with a main driving shaft upon which are locateda tight pulley 1 and a loose pulley 2. This shaft, which carries apinion 3, is intended to be continuously rotated in the direction of thearrow (Fig. 1) while the machine is in use. The pinion 3 drives twogears 4 and5, each of which is mounted on its individual shaft supportedby the framework of the machine.

The gear 4 continuously rotates the rand Y pivoted near its center at26, and itslassociated parts. The ends of the lever are enlarged, andoperate in the drilled out bosses These bosses are slotted on the sidestoward the center of the lever, as shown at 29, to allow the lever topass through the slots into the drilled out portions of the bosses. Therear en'd of the lever 10 is enlarged and tapped for the adjusting screw33, the end of which bears against the plunger 34 that carries the camroll 9. This plunger is prevented from turning in the boss 27 by thescrew 35, which engages a longitudinal slot in the top of the plunger.The plunger is thus free to move in and out but the cam roll 9alwaysremains in proper relation to the cam track 8. A compression spring 22forces the rear end of the lever inward, thus keeping the end of thescrew 33 in contact with the plunger 34 and the cam roll 9 in contactwith its cam track 8. 'The front end of the lever 10 is enlarged' anddrilledto allow the rod 36, secured to the back of the rotatable presserblock 11, to pass through it freely. Between the presser block and thelever 10 a strong-compression spring 23 is interposed. The outer end ofthe rod 36 is threaded for an adjusting nut 37 and check nut 38 andbetween the nut 37 and the lever 10 a smaller spring 40 is nterposed totake up back lash 'and increase the smoothness of operation. By turningthe nut 37, the rod 36 may be drawn through the lever 10 and the spring23 adjusted to have the desired amount of initial compression which willprevent any axial yielding of the presser block 11 until after therequired amount of pressure has been put upon the rand strip by themovement of the lever 10 and presser block 11 toward the rand turninghead 6. When the cam roll 9 has reached the raised portion 8a of the camtrack and the front end of the lever 10 has reached the limit of itsmovement toward the rand turning head 6, the spring 23 will.

be compressed still more andthe presser block can then yield axially toaccommodate itself to variations in the thickness of the rand strip. Themaximum pressure that will be applied to the rand, depending upon theamount that the spring 23 is inally compressed, is determined by theadjusted position of the screw 33 in the rear end of the lever 10. /Vhenthis screw 33 is turned inwardly, the compression is increased, as willbe understood by an inspection of Figs. 1, 4 and 5. The other cam track12, by means of cam roll 18 located on the cam lever 13, intermittentlyreciprocates the connecting link 14 and operates the rand guide 15,moving it into and out of coperative relation to the rand turninghead 6and the presser block 11. Attached to the mechanism for operating therand guide and, in this particular construction, attached to theconnecting rod, is an end gage 16 for locating the rand strip 17longitudinally when it is rst inserted into the machine. The rotary randmolding members, comprising the rand turning head 6 and the presserblock 11, together with the rand guide 15, when in cooperative relationto each other, crimp and mold the rand in the manner usual in suchmachines and need not be described here in detail.

Inv order to point out how, by. controlling the movements of the randmolding members and the rand guide, only a portion of the rand strip,intermediate between its ends, is operated upon, the operation of themachine willnow be described in detail.

With the rand guide and end gage in the position shown in Fig. 2, therand strip 17 is inserted from above until its lower end rests upon theend gage 16 in the position shown in Said Fig. 2. vAt this time,inasmuch as the cam roll 9 is on the low portion of the cam track 8, thepresser block 11' is drawn away from the rand-turning head 6 by thecompression spring 22 acting on the pivoted lever 10. This position ofthe presser block, which isV Shown in Fig. 4, leaves plenty of room forthe rand strip to be inserted between it. and the rand turning head.`vThecam track.12,vactingon the cam.

,roll l18, then moves the cam lever 13, con' necting link 14 and randguide 15 into the position shown in Fig. 3, in which position theyremain for substantially half a revolution of the cam. When therandguide first '.assumes this position, the raised portion 8a of the camtrack 8 commences to act upon the cam roll 9 and moves the presser block11 into cooperative relation to the rand turning head 6, the spring 23being further comlpressed by this operation so that the prestherand-turning head to crimp it properly.

It will be seen that the screw 24 and the slot 25 at the upper end ofthe end gage provide means for adjusting the endV gage so that thecrimping operation may start at Vany desired point longitudinally of therand strip. After the parts have been brought into coperative relationto each other, the rand strip is crimped and molded for a limitedportion of its length in the manner usual in rotary rand turningmachines. vWhen the cam roll 9 drops off the raised portion 8a of thecam track 8, the pressure of the presser block is removed, the randturning operation ceases and the completed rand 19 drops upon the bench.The rand guide and end gage are retracted at the same time into theposition shown in Fig. 2 and remain in this position for a length oftime sufficient to allow a new rand strip to be inserted in the machine,while the rotation of the machine continues without stopping. Thus therand strips are fed to the machine, one after another, without Athenecessity of starting and stopping it for each one operated upon. Afterthe completed rand 19 is attached to a heel, the ends 20 of the rand aretrimmed olf in line with the breast of the heel and the heel is thencompressed in a heel compressing machine in the usual Way.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent of the United States is 1. A machine ofthe class described, having, in combination, rand molding means, andmeans constructed and arranged to limit the action of said rand moldingmeans to a portion of a rand strip intermediate between its ends.

2. A machine of the class described, having, in combination, randmolding means, and means constructed and arranged to limit the action ofsaid rand molding means to the longitudinally central portion of therand strip.

3. A machine of the class described, having, in combination, rotary randmolding means, and means constructed and arranged to limit the action ofsaid rand molding means to a vportion of a rand strip intermediatebetween its ends. Y

4. A machine of the class described, having, in combination, randmolding means and means constructed and arranged to prevent the actionof said rand molding means upon the end portions of a rand strip.

5. A machine of the class described, having, in combination, rotary randmolding means and means constructed and arranged to prevent the actionof said rand molding means upon the end portions of a rand strip.

6. A machine of the class described, having, in combination, rotary randmolding members and means constructed and arranged to move said randmolding members periodically into and out of cooperative relation. toeach other to mold a portion only of a rand strip.

7 A machine of the class described, having, in combination, rand moldingmembers, a rand guide and means constructed and arranged to move saidrand molding members and rand guide periodically into and out ofcooperative relation to each other to mold a portion only of a randstrip.

8. A machine of the class described, having, in combination, rotary randmolding members, a rand guide and means constructed and arranged to movesaid rand molding members and rand guide periodically into and out ofcoperative relation with each other to mold a portion only of a randstrip.

9. A machine of the class described, having, in combination, randmolding means, means constructed and arranged to limit the action' ofsaid rand molding means to a portion of a rand strip intermediatebetween its ends and an adjustable end gage to position the rand striplongitudinally and cause the rand molding means to operate upon apredetermined portion of the rand strip.

10. A machine of the class described, having, in combination, randmolding means, means constructed and arranged to limit the action ofsaid rand molding means to a portion .of a rand strip intermediatebetween its ends and an adjustable end gage to position the rand striplongitudinally and cause the rand molding means to operate upon thelongitudinally central portion of the rand strip.

11. A machine of the class described, having, in combination, a rotaryshaft provided with a rand turning head, a presser block, cam-actuatedmeans for moving said presser block into and out of coperative relationto said rand-turning head, a rand guide and an adjustable end gage toposition a rand strip longitudinally.

12. A machine of the class described, having, in combination, a rotaryshaft provided with a rand turning head, a presser block, a rand guide,an adjustable end gage to position the rand strip and means constructedand arranged to move both said presser block ing, in combination, arotary shaft provided with a rand turning head, a freely rotatablepresser block coaxial With said shaft and yieldingly movable axially,cam actuated means for moving axially said presser block into and out ofcooperative relation to said rand-turning head, a rand guide, and acamactuated means for moving said rand guide into and out of coperativerelation to the rand turning head.

v14. A machine of the class described, having, in combination, a rotaryshaft provided with a rand turning head, a freely rotatable axiallymovable presser block, means operating periodically for moving axiallysaid presser block into and out of coperative relation to saidrand-turning head, a rand guide for guiding a rand strip between therand turning head and the presser block, and an adjustable end gage toposition the rand strip so that only a portion thereof in-` termediatebetween its ends Will be operated upon during the time that the randturning head and presser-block are in coperative relation to each other.

l5. A machine of the class described, having, in combination, a rotaryshaft provided With a rand turning head, a rotatable presser' blockyieldingly movable axially, means, including a cam, a pivo-ted lever andyielding connections, for moving axially said presser block into and outof cooperative relation to said rand-turning head, a rand guidemechanism, including a pivoted rand guide, a cam, a cam lever andconnecting rod, for swinging said rand guide into and out of cooperativerelation to the rand turning head and an end gage adjustably secured tosaid rand guidey mechanism to position the rand strip.

In testimony whereof I have signed my name to this specification.

CHARLES E. KENNEDY.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

